Title:
SEQUENCE MOLDING DEVICE
Document Type and Number:
Japanese Patent JP2017019010
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To alleviate a constriction on a molding shape caused by the interference or the like of a molding roller, and to raise a degree of freedom of a layout related to the molding shape.SOLUTION: Since molding rollers 12, 14 are gripped between a positioning groove 42 formed at a backup roller 18 and a workpiece (raw material of a gear coarse member 20), axial cores S1 of the molding rollers 12, 14 are located within a plane which is in common with axial core S2, and the molding rollers are positioned in constant molding postures which are inclined at prescribed inclination angles, a support shaft becomes unnecessary, the largest diameter dimensions of the molding rollers 12, 14 can be reduced, the inclination angles can be appropriately defined, and in addition to this, the interference of the molding rollers 12, 14 is suppressed, and a degree of freedom of a layout of a molding shape is thereby raised. For example, when molding the gear coarse material 20 having a heavy thickness part 22, an inside corner part 24 is arranged at an internal peripheral side of the heavy thickness part 22; meanwhile, since the interference of the molding rollers 12, 14 is suppressed, the inside corner part 24 can be molded at an angle near 90 degrees, and a yield of a material is thus improved.SELECTED DRAWING: Figure 3
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Inventors:
SUKEDA TAKUYA
ADACHI HIRONARI
SUGIYAMA TORU
ISHITA HIROSHI
HIRAI NAOKI
ADACHI HIRONARI
SUGIYAMA TORU
ISHITA HIROSHI
HIRAI NAOKI
Application Number:
JP2015141380A
Publication Date:
January 26, 2017
Filing Date:
July 15, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B21H1/00; B21H1/04; B21H9/00
Attorney, Agent or Firm:
Haruyuki Ikeda
Kojiro Ikeda
Kojiro Ikeda
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